To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Heavy trailers or bed loads can make the back end sag and throw off your steering and braking. These SumoSprings Solo Custom Helper Springs add up to 1,000 lbs of support at 50-percent compression to help your suspension stay level and steady. They cushion bumps, minimize sway, and reduce bottoming out so you keep control and comfort even when the load gets serious.
Every load feels different, and these springs adjust naturally to match. The progressive urethane design compresses easily with light loads for a softer ride, then firms up as weight increases—compressing by as much as 80 percent to carry heavier weight. That means smoother driving on small bumps and solid stability when you’re fully loaded or towing.
When a curve, crosswind, or uneven load tries to throw you off balance, each spring works on its own to keep your ride planted. This independent action helps even out weight side to side, reducing body roll and sway so handling feels sure and predictable through corners or when pulling into uneven spots.
Road salt, oil, and UV rays won’t slow these down. The microcellular urethane springs are built to handle temperatures from -25 F to 200 F while resisting abrasion and wear that can break down other materials. They compress vertically with minimal side expansion so they fit tight spaces without getting damaged.
There’s no tubing to run or air pressure to monitor—just a solid pair of jounce-style springs that bolt into place with no drilling required. Once installed, they’re completely maintenance-free, ready to provide stable suspension support trip after trip without extra adjustment or upkeep.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
I put these on a 2013 Jeep JK (not lifted) that tows a 3000 lb trailer in rough terrain; Total game changer.
These replaced the anemic factory stops (which had completely disintegrated) and make it impossible to 'bottom out' on the dips and holes that use to beat up the suspension. I got nearly all of my vertical travel back and the vehicle now sits almost level under high tongue load.
They go on pretty easy. I suggest sliding in one side, and then using a wooden dowel and hammer to pop the other side in the stock receiver cup.
Highly recommended. These are a MUST if you are towing a trailer (with a medium sized SUV) of any significant weight or if you just want to be able to bounce hard without bottoming out your suspension. I am likely going to get the front suspension version now as well.
Wish I knew these existed sooner.
Fits great, 20 minute install. Works as advertised. Whats not to like?
The product is perfect and It arrived here sooner than the tracking indicated.
Helped reduce squat on tow vehicle while towing which is just what we wanted.
Great service and great products always from you guys
Factory bump stops too short with new leaf pack this solved the problem
These are too stiff for a Ranger. Feels like driving around on your bumpstops.
Used for '21 ford ranger for towing 5500lb travel trailer. Helps with squat and ride, good option. Didn't use 1/2 puck, but will need to go back and add to further reduce squat.
Put on Sumo springs helper springs on my 2022 Ford Ranger and it was easy to install. They work great on hitting any bumps and when pulling my travel trailer. Would recommend them for sure.
These made a huge difference. I towed a travel trailer and the roads around me are pretty horrible. These springs made a big difference in our ride comfort and I couldn’t even tell they were there when unloaded. I highly recommend these if you tow on a regular basis.
They do a good job. After the install we brought home a ton of home heating pellets on our utility trailer. Barely any rear suspension drop at all. They're a simple part that's easy to install and they do the job. One tip tho, be sure to heat the old bolts to ease the removal of the original parts.
After a year, very good suspension enhancement. The initial install was a pain only because I sheared the factory bolt in the original bump stop trying to remove it. Had to drill out and re-tap for new Sumo spring bolt.
These were a great replacement for the included OEM bump stops that were basically worthless. I was able to max out towing capacity without blinding oncoming traffic. Handling is greatly enhanced while towing. Install was incredibly quick and easy by removing the wheels for direct access. Only drawback is unloaded ride is now a little harsh.
Works great on 2020 ford ranger. Left out the extra spacer because I don't want it riding on the leaf spring all the time. This gave it almost an inch clearance before the sumo touches and starts to help. That is what I wanted to not have it as stiff initially offroad, etc.
Easy shopping, fast shipping.
They were great towing, definitely noticed a difference w/ no load or trailer. It hits a lot quicker but not too bad over all. Would buy again.
Don’t shear the bolts off!!!!!
After drilling out the rusted bolt I sheared off removing the old bump stops, they installed quickly and easily. I soaked the other bolt in penetrating oil and it did not shear off. That one installed easily.
Have about 1500 miles towing with these, what a difference. It really makes towing much more stable. It does ride stiffer unloaded, but it not terrible.
I've been very pleased with my sumo springs! Put them on my 2019 ford randger and drove fully loaded 7.5k trailer from Oregon to Indianapolis and the setup drove great. Very little squate,very comfotable, and safe. Now the truck drive stiffer but not bad I still have them on and I hardly ever tow anything anymore.
Victoria H.
3/19/2025
Sounds like these helped get the job done well for you, Andrew! That's quite the road trip, did you get to see anything memorable along the way?
Do you have a question about this Vehicle Suspension?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Wes
6/3/2024
Still. holding up like new about 15k miles later with towing and loads.